Put benchmarking behind a feature wall

Cargo.toml

@@ -12,6 +12,7 @@ pgn-lexer = { git = "https://github.com/datawater/pgn-lexer" }
 
 [features]
 safe_u24 = []
+benchmark = []
 
 [profile.release]
 opt-level = 3

src/main.rs

@@ -1,6 +1,5 @@
 // TODO: Define and Write documentation for the CMBR Standard.
 // TODO: Seperate the cli and libcmbr
-#![feature(test)]
 #![allow(non_upper_case_globals)]
 
 mod cmbr;

tests/pgn/ast.rs

@@ -1,3 +1,5 @@
+#[cfg(feature = "benchmark")]
+#[feature(test)]
 extern crate test;
 
 #[cfg(test)]
@@ -6,7 +8,9 @@ mod pgn_tests {
     use project_root::get_project_root;
     use std::fs::File;
 
+    #[cfg(feature = "benchmark")]
     use super::test::Bencher;
+
     use crate::pgn;
 
     #[test]
@@ -40,6 +44,7 @@ mod pgn_tests {
         assert_eq!(format!("{:?}", ast), ast_expected);
     }
 
+    #[cfg(feature = "benchmark")]
     #[bench]
     fn bench_ast(b: &mut Bencher) {
         let file_path = get_project_root().unwrap().join("data/twic1544.pgn");

tests/pgn/lex.rs

@@ -1,3 +1,5 @@
+#[cfg(feature = "benchmark")]
+#[feature(test)]
 extern crate test;
 
 #[cfg(test)]
@@ -7,7 +9,9 @@ mod pgn_tests {
     use project_root::get_project_root;
     use std::{collections::VecDeque, fs::File};
 
+    #[cfg(feature = "benchmark")]
     use super::test::Bencher;
+
     use crate::pgn;
 
     #[test]
@@ -108,6 +112,7 @@ mod pgn_tests {
         assert_eq!(tokens_expected, tokens);
     }
 
+    #[cfg(feature = "benchmark")]
     #[bench]
     fn bench_lex(b: &mut Bencher) {
         let file_path = get_project_root().unwrap().join("data/twic1544.pgn");